This is a Ph.D thesis submitted to Department of Philosophy, Osmania University, Hyderabad, A.P., India in 2000 A.D by Sridhar Rapelli. This thesis is an outcome of critical research of the three major religious systems of India viz. Advaita, Visistadvaita, and Dvaita in relation to Karma, Bhakti, and Jnana Yoga Systems with respective to Achala Paripurna Rajayoga Siddhanta. In relation to the Vedas, Upanishads, and the other important scriptures of Hinduism, it is proved that Achala Paripurna Rajayoga Siddhanta gives comprehensive and complete knowledge of the Brahman and the Achala Paripurna Brahman. And by practicing that knowledge in one's actions harmoniously, one will get mukti from all kinds of illusions. This is an extraordinary work on Achala Yoga Siddhanta in relation to emergent Indian Philosophical Systems.